At first blush, nothing seems as unexciting or mundane as the grapevine trellis. Yet, it is hardly a dull topic, considering the changes that have come about during the last decade or two or three. The trellis system not only provides support for the grapevine (substituting for trees from grapevine days of yore) but, more importantly, defines the structure of the canopy relative to the fruit zone. For winegrape growers, it’s all about the fruit and the environment (or microclimate) in wh...

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